From: Marc Ballarin <Ballarin.Marc@gmx.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: Calling suspend() in halt/restart/shutdown -> not a good idea
Date: Mon, 1 Aug 2005 20:37:28 +0200 [thread overview]
Message-ID: <20050801203728.2012f058.Ballarin.Marc@gmx.de> (raw)
In-Reply-To: <1122908972.18835.153.camel@gaston>
On Mon, 01 Aug 2005 17:09:31 +0200
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> Hi !
>
> Why are we calling driver suspend routines in these ? This is _not_ a
> good idea ! On various machines, the mecanisms for shutting down are
> quite different from suspend/resume, and current drivers have too many
> bugs to make that safe. I keep getting all sort of reports of machines
> not shutting down anymore.
For example, my Centrino laptop will restart instead of power down with
-mm kernels.
To "fix" this I can either:
- unplug power. Shutdown works when on battery power.
- attach an external USB hard disk => power down always works.
- remove device_suspend(PMSG_SUSPEND) => power down always works.
Marc
next prev parent reply other threads:[~2005-08-01 18:43 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-01 15:09 Calling suspend() in halt/restart/shutdown -> not a good idea Benjamin Herrenschmidt
2005-08-01 18:37 ` Marc Ballarin [this message]
2005-08-01 20:08 ` Benjamin Herrenschmidt
2005-08-02 9:54 ` Pavel Machek
2005-08-03 11:40 ` Benjamin Herrenschmidt
2005-08-03 16:53 ` Kyle Moffett
2005-08-03 19:59 ` Benjamin Herrenschmidt
2005-08-04 20:56 ` Pavel Machek
2005-08-04 21:04 ` Pavel Machek
2005-08-02 9:53 ` Pavel Machek
2005-08-02 14:40 ` Eric W. Biederman
2005-08-02 14:45 ` Pavel Machek
2005-08-03 11:43 ` Benjamin Herrenschmidt
2005-08-03 11:43 ` Benjamin Herrenschmidt
2005-08-03 11:38 ` Benjamin Herrenschmidt
2005-08-04 2:27 ` Andrew Morton
2005-08-02 10:04 ` Pavel Machek
2005-08-03 11:41 ` Benjamin Herrenschmidt
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